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### So, what have we learned?

* https://wiki.openoffice.org/wiki/Documentation/DevGuide/Extensions/Options_Dialog

* https://github.com/vmiklos/lo-sdk-examples/tree/master/java/OptionsPageDemo

* https://github.com/kelsa-pi/unodit

* https://github.com/p--q/OptionsDialog/tree/master/OptionsDialog/src

* https://github.com/p--q/OptionsDialog/blob/master/OptionsDialog/src/pythonpath/optionsdialog/component.py

* https://wiki.openoffice.org/wiki/Documentation/DevGuide/Extensions/Adding_a_Leaf_to_an_Existing_Node

* https://forum.openoffice.org/en/forum/viewtopic.php?f=20&t=96509 → the __init__(,args) parameter was invalid